Fwd: [8u] RFR 8233197: Invert JvmtiExport::post_vm_initialized() and Jfr:on_vm_start() start-up order for correct option parsing

[Jaroslav Bachorík]

Resending again in plain text to make the filters pass.

---------- Forwarded message ---------
From: Jaroslav Bachorík <jaroslav.bachorik at datadoghq.com>
Date: Mon, Apr 20, 2020 at 4:02 PM
Subject: [8u] RFR 8233197: Invert JvmtiExport::post_vm_initialized()
and Jfr:on_vm_start() start-up order for correct option parsing
To: jdk8u-dev <jdk8u-dev at openjdk.java.net>


Please review the following backport

JIRA.     : https://bugs.openjdk.java.net/browse/JDK-8233197
Webrev. : http://cr.openjdk.java.net/~jbachorik/8233197/

The backport patch applied rather cleanly, not considering several
offset adjustments.
The only part that required an additional change was modifying the
place where java lang classes initialization happens in thread.cpp -
those classes need to be initialized before 'Jfr::on_create_vm_2()' is
called. In order to achieve this I just moved around the whole
codeblock related to java lang classes initialization.

All tests from jdk_jfr are passing after this patch has been applied.

Thanks!

-JB-